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Flashcards in Unit 2 Deck (22)
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1

What is the general formula for alkanes?

Cn H2n+2

2

What is the general formula and functional group for the alkenes?

Cn H2n, C=C

3

What is the general formula and functional group of the cycloalkanes?

Cn H2n, C-C in a ring

4

What is the general formula and functional group for the alcohols ?

Cn H2n+1 OH, OH

5

What is the general formula and functional group for the carboxylic acids?

Cn H2n+1 COOH, COOH

6

What is the general formula and functional group for the esters?

RCOOR, COO

7

What is a use for an alcohol?

Fuels

8

What is a use for a carboxylic acid?

Making esters

9

What is a use for an ester?

Fragrances and flavourings

10

What does the term unsaturated mean?

C=C double bond

11

How do you test for unsaturation?

Using bromine solution, turns colourless

12

What are isomers?

Same molecular formula, different structural formula

13

When a hyrdocarbon burns completely what is produced?

CO2 + water

14

What are the products of incomplete combustion of a hyrdocarbon?

Carbon monoxide, carbon and water

15

What is an exothermic reaction?

Gives out heat

16

What is an endothermic reaction?

Takes in heat

17

Give two examples of addition reactions?

Hydration and hydrogenation

18

In an addition reaction, an alkene + hydrogen -> ?

Alkane

19

What is an addition reaction?

Alkene reacting with halogens (eg hydrogen or bromine)

20

What happens to the boiling point of a carboxylic acid as the number of carbons increases? + why?

Boiling point gets higher because the Van der Waal forces are stronger the higher the number of carbons

21

Why are larger carboxylic acids less soluble than smaller ones?

Long hydrocarbon part of molecule makes it more difficult for them to dissolve

22

What is a homologous series?

A family of compounds with the same general formula and similar chemical properties